The following context is the one I have received from SQL Server Magazine that talks about a good backup tool in the market, study on: Third-Party Tool Enhances SQL Server Backup and Recovery Microsoft SQL Server’s own backup and restore facilities are probably some of the most robust in the industry...

Though the message specifies as an informational message only and no user action is required, you should take some action to avoid current behaviour of databases within your environment. Also check whether you have enabled the AUTO_CLOSE property for any of the databases on that SQL Server instance,...